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///M3 Forum The BMW E46 ///M3 is the M version E46 and puts out an amazing 333 HP and 262 lb-ft of torque at stock specs! There are an amazing amount of modifications for both the coupe and convertible models so read up and get started modifying your cars today!

I agree 100% with Cold M3, I have a BMC for summer use and I run and oem filter for winter dust and grime. From what I've read there really are no good CAI's as they tend to lose power unless you go full boar and get the CSL intake.

GJ345: i would stick with stock. aftermarket intakes are a small improvement if any. i did get a gain on the dyno from my aFe stage 2 intake. (only 5hp) but i have stock with BMC now since the aFe was causing MAF problems

i agree 100% with cold m3, i have a bmc for summer use and i run and oem filter for winter dust and grime. From what i've read there really are no good cai's as they tend to lose power unless you go full boar and get the csl intake.

this !

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"! First rule of Italian driving, that which is in your mirror is not important !"

one of the better filters for the stock air box is the BMC filter. BMC is also the brand that is used directly by BMW for the CSL. although that filter is a different shape. so if it's good enough for BMW and their highest performance M3, it should be good enough for you.